Switch ampacity question

[RatherBeFishin]

Why? We do sort of thing that for voltage drop. As long as all the wire in the circuit has enough ampacity for the OCPD it can be as large as you like.

Getting technical here but if someone saw 12/2 ran on a 15 amp ckt and didn’t bother to check that the ckt was on a 15 amp breaker and decided to change or add a 20 amp receptacle that could be an issue

 

[infinity]

Getting technical here but if someone saw 12/2 ran on a 15 amp ckt and didn’t bother to check that the ckt was on a 15 amp breaker and decided to change or add a 20 amp receptacle that could be an issue

Here's the thing, although your scenario is possible no one should be changing the breaker without first tracing the entire circuit. Although not required you could always place a tag on the circuit.

 

[RatherBeFishin]

Here's the thing, although your scenario is possible no one should be changing the breaker without first tracing the entire circuit. Although not required you could always place a tag on the circuit.

Right tagging the wire on the breaker for 15 amps only if there’s 14 awg anywhere on the ckt is a good idea, even if a wire is ran off an existing outlet in larger wire not a bad idea to tag the wire for 15 amps so no one gets any ideas down the road

 

[infinity]

Right tagging the wire on the breaker for 15 amps only if there’s 14 awg anywhere on the ckt is a good idea, even if a wire is ran off an existing outlet in larger wire not a bad idea to tag the wire for 15 amps so no one gets any ideas down the road

Yes if it makes the installer sleep better at night go ahead and tag it. For me unless a tag is required by the NEC I'm never tagging a larger conductor than required on a circuit breaker.